Moisture-proof and dehumidification type distribution box structure

Abstract

The application discloses a kind of damp-proof and dehumidification type distribution box structure, related to distribution box damp-proof and dehumidification technical field, including cabinet, control piece, dehumidification mechanism, support frame, drive lifting mechanism, buffer lifting mechanism and switch.Control piece includes waterlogging monitoring module, action counting module, state determination module, drive control module and dehumidification control module;Waterlogging monitoring module real-time acquisition cabinet bottom water height signal, action counting module records switch action cumulative amount.State determination module generates water level change rate and two dynamic threshold values in combination with water height signal, obtains two intermediate states by correlation analysis, after hysteresis processing, into dynamic inhibition mode or active defense mode.The application realizes double dynamic perception and collaborative control, without fixed threshold value, can adapt to complex humid environment, improves damp-proof and dehumidification effect and equipment reliability.

Description

Technical Field

[0001] This invention relates to the field of moisture-proof and dehumidification technology for distribution boxes, specifically a moisture-proof and dehumidification type distribution box structure. Background Technology

[0002] With the continuous expansion of power systems and the increasing intelligence of power distribution equipment, distribution boxes, as core nodes for power distribution and terminal control, are widely used in various scenarios such as industrial plants, commercial buildings, residential communities, and outdoor base stations. Because distribution boxes integrate a large number of circuit breakers, contactors, relays, and electronic control units, they are highly sensitive to the temperature and humidity conditions of the operating environment. Especially when distribution boxes are located in basements, near cable trenches, in rainy areas, or in seasonally high-humidity environments, the bottom of the box is prone to forming a damp microenvironment due to surface water accumulation, rainwater backflow, or condensation. Moisture seeps into the box through gaps in the base plate or cable inlets, which not only reduces electrical insulation performance and accelerates corrosion of metal components but may also cause serious safety accidents such as discharge, short circuits, and even fires. At the same time, the cumulative effects of thermal expansion and contraction, electromagnetic vibration, or mechanical operation on the internal components of the distribution box during long-term operation also accelerate contact wear and structural fatigue, resulting in a significant nonlinear degradation relationship between the reliable lifespan and service condition of the switching equipment. Therefore, how to achieve an effective response to both the rate of external water ingress and the consequences of internal dampness in complex and humid environments has become a critical issue that urgently needs to be addressed.

[0003] Currently, the existing technologies for moisture-proofing and dehumidification design of distribution boxes mainly adopt two approaches: passive protection and active dehumidification. Passive protection measures include structural improvements such as adding sealing gaskets to the bottom of the box, applying waterproof adhesive, raising the mounting foundation, or adding drainage holes. These methods can delay moisture intrusion to some extent, but they cannot actively eliminate moisture or water that has already entered the box. Moreover, long-term use can lead to a significant decrease in protective performance due to aging of sealing materials and blockage of drainage holes. Active dehumidification technology generally uses devices such as electric heaters, semiconductor cooling chips, or dehumidifiers to forcibly dry the air inside the box, combined with humidity sensors or condensation sensors to achieve start-stop control. In addition, some high-end distribution box products have also introduced water level switches or float mechanisms, which trigger alarms or automatically start drainage devices when the water at the bottom of the box reaches a certain height. However, most existing control logics are based on simple threshold judgments using a single physical quantity, and the control strategies are relatively rigid, lacking a comprehensive consideration of the coupling relationship between the evolution trend of the humid environment and the operating status of the equipment itself. Although a few solutions attempt to combine multiple sensors for comprehensive judgment, their decision-making mechanisms are still mainly based on static preset parameters, making it difficult to adapt to dynamic factors such as seasonal changes in on-site working conditions, load fluctuations, and equipment aging.

[0004] However, existing technologies still have significant shortcomings and deficiencies in practical applications. First, traditional dehumidification systems typically only focus on the amount or rate of external moisture intrusion, neglecting the cumulative damage to internal switching equipment caused by prolonged moisture exposure. In other words, there is a lack of effective prioritization and coordination mechanisms between the two major requirements of "moisture prevention" and "dehumidification." For example, in the event of a sudden external water intrusion, if the system continues to operate in conventional dehumidification mode, it cannot promptly raise critical switching components to prevent short-circuit failures. Conversely, in cases of slow moisture intrusion causing frequent switch activations, if the system uses water level as the sole criterion, it may remain in standby mode for extended periods, failing to actively intervene in dehumidification and accelerating contact wear and mechanical fatigue. Second, water level detection and switch activation monitoring in existing systems are independent, lacking a time-series correlation analysis between the two. This leads to control decisions that are either overly conservative and lag in response, or overly aggressive and cause frequent malfunctions. Third, water level thresholds are mostly set as fixed values, unable to adaptively adjust to environmental fluctuations, sensor drift, or changes in water accumulation patterns. This makes them prone to missed or false detections during rainy seasons or periods of frequent condensation. Furthermore, most dehumidifiers operate continuously and synchronously, which not only consumes a lot of energy but also easily creates a dehumidification dead zone at the bottom of the unit, reducing the overall moisture-proof effect. When the drive lifting mechanism actively intervenes in the switching state, the action counting module often confuses the intervention behavior with the natural moisture-triggered behavior, further contaminating the data basis for state determination and creating a vicious cycle of positive feedback. In summary, there is an urgent need to design a distribution box structure that can simultaneously sense the external water inflow rate and the cumulative effect of the switching action, and based on this, achieve coordinated control of moisture-proofing and dehumidification to effectively address the equipment protection needs in complex and humid environments. Summary of the Invention

[0005] The present invention provides the following technical solution: a moisture-proof and dehumidifying distribution box structure, including a cabinet, the bottom of which is provided with a drainage window, and further including control components, a dehumidification mechanism, a support frame, a drive lifting mechanism, a buffer lifting mechanism and a switch;

[0006] The control unit is installed on the front side of the cabinet;

[0007] The dehumidification mechanism is provided in three sets, and all three sets of the dehumidification mechanism are fixed to the bottom inner wall of the cabinet and located above the drainage window;

[0008] The support frame is fixedly installed inside the cabinet.

[0009] The drive lifting mechanism is installed on the top of the support frame;

[0010] The buffer lifting mechanism is installed in the middle of the support frame;

[0011] The switch is mounted on the support frame and is located above the buffer lifting mechanism;

[0012] The control components include:

[0013] A water accumulation monitoring module is used to collect the water accumulation height signal at the bottom of the cabinet in real time;

[0014] An action counting module is used to record the cumulative amount of switch actions triggered by the buffer lifting mechanism.

[0015] The status determination module is connected to the water accumulation monitoring module and the action counting module respectively. It is used to simultaneously receive the water accumulation height signal and the cumulative amount of switch action, and generate a water level change rate based on the water accumulation height signal. The status determination module generates a first control command or a second control command according to the combined state of the water level change rate and the cumulative amount of switch action.

[0016] A drive control module, connected to the state determination module and the drive lifting mechanism, is used to control the working mode of the drive lifting mechanism according to the first control command.

[0017] A dehumidification control module, connected to the status determination module and the dehumidification mechanism, is used to control the working mode of the dehumidification mechanism according to the second control command.

[0018] Preferably, the state determination module includes a first logic unit for performing time-series correlation analysis on the water level change rate and the cumulative amount of switch actions:

[0019] When the rate of change of water level exceeds the first dynamic threshold, regardless of the cumulative value of the switch action, a first intermediate state representing "water accumulation priority" is generated.

[0020] When the rate of change of water level is lower than the first dynamic threshold and the cumulative amount of switch action exceeds the second dynamic threshold, a second intermediate state representing "moisture prevention priority" is generated.

[0021] When the water level change rate is lower than the first dynamic threshold and the cumulative amount of switch action is lower than the second dynamic threshold, the state determination result of the previous moment remains unchanged.

[0022] Preferably, the first dynamic threshold is generated as follows: the first logic unit acquires the waveform of the water accumulation height signal in real time, calculates the average slope and slope variance of the waveform within a continuous time window, and uses the absolute value of the sum of the average slope and three times the slope variance as the first dynamic threshold.

[0023] Preferably, the second dynamic threshold is generated as follows: the first logic unit obtains the sequence of cumulative switching actions recorded by the action counting module, performs a discrete Fourier transform on the sequence to extract the main frequency component, and multiplies the amplitude of the main frequency component by a preset scaling factor to obtain the second dynamic threshold.

[0024] Preferably, the state determination module further includes a second logic unit, which is connected to the first logic unit and is used to receive a first intermediate state or a second intermediate state. The second logic unit has a preset state transition hysteresis interval. When transitioning from the first intermediate state to the second intermediate state, the second intermediate state needs to last for a first duration. When transitioning from the second intermediate state to the first intermediate state, the transition is executed immediately without waiting.

[0025] Preferably, the second logic unit generates a first control command based on the first intermediate state. After receiving the first control command, the drive control module controls the drive lifting mechanism to enter a dynamic suppression mode. In this mode, the drive lifting mechanism drives the buffer lifting mechanism to rise at a first speed, so that the switch is triggered in an intermittent pulse manner. In addition, in the dynamic suppression mode, the action counting module stops recording the cumulative amount of switch action caused by the active intervention of the drive lifting mechanism.

[0026] The second logic unit generates a second control command based on the second intermediate state. After receiving the second control command, the dehumidification control module controls the dehumidification mechanism to enter the active defense mode. In this mode, the three dehumidification mechanisms operate intermittently in turn, and the operating phase of the two adjacent dehumidification mechanisms differs by 120 degrees.

[0027] Preferably, when the drive control module controls the drive lifting mechanism to enter the dynamic suppression mode, it also simultaneously acquires the actual response waveform of the switch being triggered, and dynamically adjusts the magnitude of the first speed according to the rising edge steepness of the response waveform; when the rising edge steepness exceeds the preset deformation threshold, the first speed is reduced.

[0028] Preferably, when the dehumidification control module controls the dehumidification mechanism to enter the active defense mode, it also simultaneously acquires the change waveform of the water level signal collected by the water accumulation monitoring module, and dynamically adjusts the switching cycle of alternating intermittent operation based on the local extreme points of the change waveform.

[0029] The present invention has the following beneficial effects:

[0030] 1. This invention achieves dual dynamic sensing of external water inlet speed and internal switch cumulative action effect, and establishes a time-series correlation analysis mechanism between the two, enabling coordinated decision-making for both moisture prevention and dehumidification. This is a fundamental innovation in the entire control logic architecture, directly solving the core pain points of "single physical quantity threshold judgment" and "lack of priority coordination for moisture prevention and dehumidification" pointed out in the background technology.

[0031] 2. The asymmetric design of the state transition hysteresis interval—where "moisture prevention → water accumulation" is executed immediately, while "water accumulation → moisture prevention" requires a continuous first-time duration—embodies a safety-first control philosophy. This logic prevents frequent mode switching and ensures zero-delay response during sudden water ingress, demonstrating outstanding value in engineering practicality.

[0032] 3. In dynamic suppression mode, the counting is paused when the switch is actively intervened, and the boosting speed is adjusted in real time based on the steepness of the rising edge of the response waveform. These two detailed design features effectively prevent the active behavior from contaminating the state determination data and protect the switch contact structure. They demonstrate the system's data integrity and equipment protection awareness in closed-loop control, and are significant features that distinguish it from existing solutions.

[0033] 4. The three dehumidification mechanisms operate intermittently with a 120° phase difference and the switching cycle is dynamically adjusted in combination with the density of local extreme points. This not only eliminates dehumidification dead zones, but also achieves an optimized balance between dehumidification effect and energy consumption, which has obvious advantages in engineering applications. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a side view of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the bracket of the present invention;

[0037] Figure 4 This is a schematic diagram showing the composition and connection relationship of the control module of the present invention;

[0038] Figure 5 This is a schematic diagram of the determination logic of the state determination module of the present invention;

[0039] Figure 6 This is a schematic diagram of the state transition hysteresis logic of the present invention.

[0040] In the diagram: 1. Cabinet; 10. Drainage window; 2. Control components; 3. Dehumidification mechanism; 4. Support frame; 5. Drive lifting mechanism; 6. Buffer lifting mechanism; 7. Switch. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The moisture-proof and dehumidifying distribution box structure involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-3The structure of a moisture-proof and dehumidifying distribution box shown includes a cabinet 1, with a drainage window 10 at the bottom of the cabinet 1 to drain accumulated water. It also includes a control component 2, a dehumidification mechanism 3, a support frame 4, a drive lifting mechanism 5, a buffer lifting mechanism 6, and a switch 7. The components work together to achieve moisture-proof dehumidification and switch protection.

[0043] Control unit 2 is installed on the front side of cabinet 1 for easy centralized control by operators;

[0044] The dehumidification mechanism 3 is provided in three sets. All three sets of dehumidification mechanisms 3 are fixed to the bottom inner wall of the cabinet 1 and located above the drain window 10 to ensure comprehensive and efficient dehumidification. The condensate generated by dehumidification can be directly discharged through the drain window 10.

[0045] The support frame 4 is fixedly installed inside the cabinet 1, providing a stable installation base for the drive lifting mechanism 5 and the buffer lifting mechanism 6;

[0046] The drive lifting mechanism 5 is installed on the top of the support frame 4 to provide reliable lifting drive force;

[0047] The buffer lifting mechanism 6 is installed in the middle of the support frame 4, can move up and down along the support frame 4, and has an elastic buffer function to protect the switch 7 from rigid impact when it is triggered.

[0048] Switch 7 is a standard switch for the distribution cabinet. It is installed on the support frame 4 and located above the buffer lifting mechanism 6. When the buffer lifting mechanism 6 rises, it is first buffered by the spring before touching switch 7 to avoid damage to switch 7. After being lifted, switch 7 remains in the on state to ensure the continuous normal operation of the equipment.

[0049] Please see Figure 4 As shown, control unit 2 includes a water accumulation monitoring module, an action counting module, a status determination module, a drive control module, and a dehumidification control module. The water accumulation monitoring module collects the water height signal at the bottom of cabinet 1 in real time. The action counting module records the cumulative amount of switch actions triggered by the buffer lifting mechanism 6. The status determination module is connected to both the water accumulation monitoring module and the action counting module, simultaneously receiving the water height signal and the cumulative amount of switch actions. Based on the water height signal, it generates a water level change rate. The status determination module generates a first control command or a second control command based on the combination of the water level change rate and the cumulative amount of switch actions. The drive control module is connected to the status determination module and the drive lifting mechanism 5, controlling the working mode of the drive lifting mechanism 5 according to the first control command. The dehumidification control module is connected to the status determination module and the dehumidification mechanism 3, controlling the working mode of the dehumidification mechanism 3 according to the second control command.

[0050] Please see Figure 5As shown, the state determination module includes a first logic unit. The first logic unit performs time-series correlation analysis on the water level change rate and the cumulative amount of switch actions. The first logic unit acquires the waveform of the water level height signal in real time and calculates the average slope and slope variance of this waveform within a continuous time window. Let the water level height signal sequence within the continuous time window be... The corresponding time series is The least squares method is used to perform linear fitting on the data points within the window to obtain the fitting slope. (represents the average slope within the i-th time window), and the slope variance is obtained by dividing the sum of squared residuals of each data point within that window relative to the fitted line by the degrees of freedom. The average slope The absolute value of the sum of the arithmetic square roots of three times the slope variance is used as the first dynamic threshold. ,Right now:

[0051]

[0052] in Let be the standard deviation of the slope, when the water level shows a decreasing trend ( (negative value) Depend on and The summation process ensures that the threshold is always positive and has a clear physical meaning, avoiding abnormal zeroing or value distortion due to a negative slope. The first logic unit also acquires the cumulative sequence of switching actions recorded by the action counting module; let this sequence be... Perform a discrete Fourier transform on the sequence:

[0053]

[0054] Extract the amplitude of the transformed main frequency component ,in Multiply the amplitude of the main frequency component by a preset scaling factor. Then used as the second dynamic threshold ,Right now:

[0055]

[0056] The sampling period for the cumulative sequence of switching actions is 10 to 60 seconds, and the data window length N is 128 or 256 sampling points; the scaling factor The value range is 0.5 to 1.5, and the specific value is pre-calibrated by those skilled in the art based on the rated operating frequency of the distribution box and the humidity level of the site; in order to reduce the computational load of the embedded controller, the discrete Fourier transform can be replaced by the Goertzel algorithm to extract the amplitude of the main frequency component at the specified frequency point.

[0057] When the rate of change of water level Exceeding the first dynamic threshold ,Right now Regardless of the cumulative value of the switching action, the first logic unit generates a first intermediate state representing "water accumulation priority"; when the water level change rate Below the first dynamic threshold And the cumulative amount of switching action Exceeding the second dynamic threshold At that time, that is and The first logic unit generates a second intermediate state representing "moisture protection priority";

[0058] When the rate of change of water level Below the first dynamic threshold And the cumulative amount of switching action Less than or equal to the second dynamic threshold At that time, that is and The first logic unit maintains the state determination result from the previous moment unchanged; when and , and When the comparison result simultaneously satisfies the mathematical conditions for generating the first intermediate state and the second intermediate state (i.e., logical conflict caused by numerical equality), the first intermediate state representing "water accumulation priority" is given priority; when the power is first turned on, the initial value of the state determination result at the previous moment is preset as the second intermediate state.

[0059] Please see Figure 6 As shown, the state determination module also includes a second logic unit, which is connected to the first logic unit and is used to receive either a first intermediate state or a second intermediate state. The second logic unit internally has a preset state transition hysteresis interval; when transitioning from the first intermediate state to the second intermediate state, the second intermediate state needs to persist for a first duration. When transitioning from the second intermediate state to the first intermediate state, the transition is executed immediately without waiting. The second logic unit generates a first control instruction based on the first intermediate state and a second control instruction based on the second intermediate state.

[0060] During operation, the water accumulation monitoring module of control component 2 collects the water height signal at the bottom of cabinet 1 in real time, and the action counting module records the cumulative amount of switch action triggered by the buffer lifting mechanism 6. The state determination module receives the above two signals simultaneously, and the first logic unit generates the water level change rate based on the water height signal, and dynamically generates the first dynamic threshold and the second dynamic threshold. When the water level change rate exceeds the first dynamic threshold, the first logic unit generates a first intermediate state of "water accumulation priority". At this time, regardless of the value of the cumulative switch action, external water ingress is given priority. When the water level change rate is lower than the first dynamic threshold but the cumulative switch action exceeds the second dynamic threshold, the first logic unit generates a second intermediate state of "moisture prevention priority", indicating that slow moisture intrusion has caused frequent switch action. When the water level change rate is lower than the first dynamic threshold and the cumulative switch action is lower than the second dynamic threshold, the first logic unit maintains the state determination result of the previous moment, avoiding false switching caused by instantaneous signal fluctuations.

[0061] The first logic unit outputs the generated first or second intermediate state to the second logic unit. The second logic unit processes the state transition according to a preset state transition hysteresis interval: if the current state is the first intermediate state and the transition to the second intermediate state is desired, the transition can only be executed after the second intermediate state has lasted for a first duration, to prevent frequent switching of control modes due to short-term fluctuations in the rate of water level change during rapid water receding; if the current state is the second intermediate state and the transition to the first intermediate state is desired, the transition is executed immediately without waiting, ensuring the fastest possible response in the event of sudden external water ingress and prioritizing equipment safety.

[0062] The second logic unit generates corresponding control commands based on the current state. When in the first intermediate state, the second logic unit generates a first control command and sends it to the drive control module. The drive control module controls the drive lifting mechanism 5 to enter a dynamic suppression mode, in which the drive lifting mechanism 5 operates at a first speed. The drive buffer lifting mechanism 6 rises, triggering switch 7 with intermittent pulses to prevent damage from continuous pressure. Simultaneously, in dynamic suppression mode, the action counting module pauses recording the accumulated switch actions caused by the active intervention of the drive lifting mechanism 5, preventing interference with the accuracy of subsequent state determination. When the drive control module controls the drive lifting mechanism 5 to enter dynamic suppression mode, it also simultaneously acquires the actual response waveform of switch 7 being triggered. Let the voltage at the rising edge of the response waveform be from peak to peak value... The time required for the percentage to rise from 10% to 90% is The steepness of the rising edge Defined as:

[0063]

[0064] in The peak-to-peak voltage of the response waveform measured at the signal output terminal of switch (7); the preset deformation threshold The value is 1.2 times the steepness corresponding to the rated operating speed of the switch, and is preset and stored in the control unit by those skilled in the art based on the factory mechanical characteristic parameters of the switch; when At that time, the first speed The speed is reduced to 50%~80% of the current value, and the buffer lifting mechanism continues to rise at the reduced speed.

[0065] When in the second intermediate state, the second logic unit generates a second control command and sends it to the dehumidification control module. The dehumidification control module controls the dehumidification mechanism 3 to enter the active defense mode. In this mode, the three dehumidification mechanisms 3 operate intermittently in turn, and the operating phase of adjacent dehumidification mechanisms 3 differs by 120°, so that a uniformly covered dehumidification field is formed in the bottom space of the cabinet 1, eliminating dehumidification dead zones. Let the switching control signals of the three dehumidification mechanisms 3 be as follows: , , The basic operating cycle is ,but:

[0066]

[0067]

[0068]

[0069] In the above expression of the square wave control signal, the high-level duration is... The duty cycle is fixed at To ensure that the three dehumidification mechanisms start sequentially within a complete cycle T and that the total effective operating time exactly covers the entire cycle; and the actual value of the basic operating cycle T should be greater than or equal to the sum of the single start-up thermal stability time and the stop cooling time of the dehumidification mechanism (3) to avoid damage caused by frequent start-up and stop due to the thermal inertia of the mechanism. When the dehumidification control module controls the dehumidification mechanism 3 to enter the active defense mode, it also simultaneously acquires the change waveform of the water level signal collected by the water accumulation monitoring module and extracts the local extreme point sequence of the change waveform. Let the time interval between two adjacent local extrema be . ,like A shortened interval (i.e., increased density at local extreme points) indicates intensified fluctuations in water level. In this case, the switching cycle T for the alternating intermittent operation should be adjusted as follows:

[0070]

[0071] in The preset standard time interval is the average time interval between two consecutive local extreme points of water accumulation height in the cabinet (1) under standard drying conditions. The specific value is determined by on-site debugging. At the same time, in order to ensure the safe operation of the dehumidification mechanism (3) and avoid damage from high-frequency start-stop, the value range of the switching cycle T is limited to the minimum cycle. To the maximum cycle Between, among The value is twice the minimum allowable start-stop interval of the dehumidification mechanism. The value is taken as 3 times the base running period T; when the calculated value is... When the value exceeds the range, the corresponding boundary extreme value is directly taken as the actual switching cycle; when the local extreme point indicates that the water level is rising, the switching cycle T is shortened to increase the dehumidification frequency; when the local extreme point indicates that the water level is falling, the switching cycle T is extended to reduce energy consumption.

[0072] When the water level change rate falls below the first dynamic threshold and the cumulative amount of switching action falls below the second dynamic threshold, the first logic unit maintains the state judgment result of the previous moment unchanged until a new state judgment condition is triggered, thereby realizing the automatic cycle of moisture prevention and dehumidification.

[0073] Working principle: This invention collects water level signals and cumulative switch action amounts through the water accumulation monitoring module and action counting module of control component 2, respectively. The first logic unit in the state determination module dynamically generates a first dynamic threshold and a second dynamic threshold. It performs time-series correlation analysis on the water level change rate and the cumulative switch action amount to generate a first intermediate state of "water accumulation priority" or a second intermediate state of "moisture prevention priority". After the state transition hysteresis interval is processed by the second logic unit, the drive control module or dehumidification control module controls the drive lifting mechanism 5 to enter the dynamic suppression mode or controls the dehumidification mechanism 3 to enter the active defense mode, thereby realizing the coordinated control of moisture prevention and dehumidification and switch protection based on the dual dynamic judgment of external water inflow rate and internal moisture consequences.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A moisture-proof and dehumidifying distribution box structure, comprising a cabinet (1), wherein a drainage window (10) is provided at the bottom of the cabinet (1), characterized in that, It also includes control components (2), dehumidification mechanism (3), support frame (4), drive lifting mechanism (5), buffer lifting mechanism (6) and switch (7); The control component (2) is installed on the front side of the cabinet (1); The dehumidification mechanism (3) is provided in three sets. All three sets of the dehumidification mechanism (3) are fixed to the bottom inner wall of the cabinet (1) and located above the drain window (10). The support frame (4) is fixedly installed inside the cabinet (1); The drive lifting mechanism (5) is installed on the top of the support frame (4); The buffer lifting mechanism (6) is installed in the middle of the support frame (4); The switch (7) is mounted on the support frame (4) and is located above the buffer lifting mechanism (6); The control element (2) includes: A water accumulation monitoring module is used to collect the water accumulation height signal at the bottom of the cabinet (1) in real time; An action counting module is used to record the cumulative amount of switch actions triggered by the buffer lifting mechanism (6) when the switch (7) is activated. The status determination module is connected to the water accumulation monitoring module and the action counting module respectively. It is used to simultaneously receive the water accumulation height signal and the cumulative amount of switch action, and generate a water level change rate based on the water accumulation height signal. The status determination module generates a first control command or a second control command according to the combined state of the water level change rate and the cumulative amount of switch action. The drive control module is connected to the state determination module and the drive lifting mechanism (5) and is used to control the working mode of the drive lifting mechanism (5) according to the first control command. The dehumidification control module is connected to the state determination module and the dehumidification mechanism (3) and is used to control the working mode of the dehumidification mechanism (3) according to the second control command.

2. The moisture-proof and dehumidifying distribution box structure according to claim 1, characterized in that: The state determination module includes a first logic unit, which is used to perform a time-series correlation analysis on the water level change rate and the cumulative amount of switch actions: When the water level change rate exceeds the first dynamic threshold, regardless of the cumulative value of the switch action, a first intermediate state representing "water accumulation priority" is generated. When the water level change rate is lower than the first dynamic threshold and the cumulative amount of the switch action exceeds the second dynamic threshold, a second intermediate state representing "moisture prevention priority" is generated. When the water level change rate is lower than the first dynamic threshold and the cumulative amount of the switch action is lower than the second dynamic threshold, the state determination result of the previous moment remains unchanged.

3. The moisture-proof and dehumidifying distribution box structure according to claim 2, characterized in that: The first dynamic threshold is generated as follows: the first logic unit acquires the waveform of the water accumulation height signal in real time, calculates the average slope and slope variance of the waveform within a continuous time window, and uses the absolute value of the sum of the average slope and three times the slope variance as the first dynamic threshold.

4. The moisture-proof and dehumidifying distribution box structure according to claim 2, characterized in that: The second dynamic threshold is generated as follows: the first logic unit obtains the sequence of cumulative switching actions recorded by the action counting module, performs a discrete Fourier transform on the sequence to extract the main frequency component, and multiplies the amplitude of the main frequency component by a preset scaling factor to obtain the second dynamic threshold.

5. The moisture-proof and dehumidifying distribution box structure according to claim 2, characterized in that: The state determination module further includes a second logic unit, which is connected to the first logic unit and is used to receive the first intermediate state or the second intermediate state. The second logic unit has a preset state transition hysteresis interval. When transitioning from the first intermediate state to the second intermediate state, the second intermediate state needs to last for a first duration. When transitioning from the second intermediate state to the first intermediate state, the transition is executed immediately without waiting. The immediate execution means that after the state determination module completes the state determination within the current control cycle (the control cycle is no more than 100 milliseconds), it outputs the corresponding control command at the beginning of the next control cycle, and the drive control module or dehumidification control module starts to execute the corresponding mode switching action within 50 milliseconds after receiving the command.

6. The moisture-proof and dehumidifying distribution box structure according to claim 5, characterized in that: The second logic unit generates the first control command based on the first intermediate state. After receiving the first control command, the drive control module controls the drive lifting mechanism (5) to enter the dynamic suppression mode. In this mode, the drive lifting mechanism (5) drives the buffer lifting mechanism (6) to rise at a first speed, causing the switch (7) to be triggered in an intermittent pulse manner. The duty cycle of the intermittent pulse is not greater than 20%, and the duration of a single pulse does not exceed half of the rated action time of the switch (7), so as to avoid damage to the switch contacts due to continuous pressure or high-frequency impact. In addition, in the dynamic suppression mode, the action counting module pauses recording the action caused by the action. The cumulative amount of switching actions generated by the active intervention of the drive lifting mechanism (5); wherein, the action counting module is provided with an active triggering flag; in the dynamic suppression mode, before each action of the drive lifting mechanism (5), the flag is set to 1, and after the action counting module recognizes the flag, it does not accumulate the trigger pulse signal generated by the active push of the drive lifting mechanism (5); when the drive lifting mechanism (5) is reset and stops active intervention, the flag is set to 0, and the action counting module resumes to accumulate the normal trigger signal caused by the natural rise of water, thereby realizing the accurate distinction between active intervention action and natural moisture trigger action; The second logic unit generates the second control instruction based on the second intermediate state. After receiving the second control instruction, the dehumidification control module controls the dehumidification mechanism (3) to enter the active defense mode. In this mode, the three dehumidification mechanisms (3) operate intermittently in turn, and the operating phase of two adjacent dehumidification mechanisms (3) differs by 120 degrees.

7. The moisture-proof and dehumidifying distribution box structure according to claim 6, characterized in that: When the drive control module controls the drive lifting mechanism (5) to enter the dynamic suppression mode, it also synchronously acquires the actual response waveform of the switch (7) being triggered, and dynamically adjusts the magnitude of the first speed according to the steepness of the rising edge of the response waveform; when the steepness of the rising edge exceeds the preset deformation threshold, the first speed is reduced.

8. The moisture-proof and dehumidifying distribution box structure according to claim 6, characterized in that: When the dehumidification control module controls the dehumidification mechanism (3) to enter the active defense mode, it also simultaneously acquires the change waveform of the water level signal collected by the water accumulation monitoring module, and dynamically adjusts the switching cycle of the alternating intermittent operation based on the local extreme points of the change waveform.

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